ASCOM DriverASCom guide，ASCom capture and ASCom 2nd have been packet into the ascome3inone driver, it means when you installed this driver, there will be three QHYCCD ASCOM driver on your computer that you can use. One is for camera #1 imaging, one if for camera #2 imaging, one is for guiding camera.

QHYCCD WINDOWS SDK
There are many software control QHYCCD camera via the QHYCCD SDK. You can download the last release QHYCCD SDK to update in first time. (Sometimes the software will be not so fast to package it). The method is download the QHYCCD SDK Package and copy the QHYCCD.DLL to the software's folder and replace the old QHYCCD.DLL. . For 64bit version you need to copy the QHYCCD_X64.DLL to the software's folder and rename into QHYCCD.DLL and replace the old one.